Adjusting mechanism for plows



H. R. TRAPHAGEN ADJUSTING MECHANISM FOR PLOWS Original Filed Jan. 19. 1920 Patented Apr. 26, 1927.

snares STATES- iezesca HARRY n. TRAPHAGEN, or ROCKFORD, ILLINoIs, ASSIGNOR 'ro EMEBSON-BBANTING- HAM MANUFACTURING COMPANY, or nocnronn, ILLINOIS, A CORPORATION-F "ILLINOIS.

Original applic ation' filed .Tianuary19,

. jThisinvention, a division of my application Serial No. 352,287, filed January 19,

1920, relates to. adjusting mechanism employed betweenthe land and furrow wheel crank axles for transmitting motion between them andfor adjustingone with respect to the other. j I

The chief object of the present invention is to provide an improved adjusting mechanism of the character described in which the upstanding adjusting .le'vershall have a substantially parallel movement when the plow frame is raised and lowered, as by means of a power lift mechanism, and in which the parts will be so relatively associated as to prevent lateral wabbling, which might otherwise be occasioned by reason of the peculiar support of such parts.

Another object is'to provide an adj ustmg mechanism of the character described which will be thoroughly practical for the purposes intended and may be constructed at a comparatively low cost.

Referring to the drawing,

Figure 1 is a view looking at the land side of a plow embodying my invention;

Fig. 2, an enlarged side view of the adjusting mechanism; 7

Fig. 3, a fragmentary plan view of the plow showing the adjusting mechanism; and F ig. 4 is an enlarged plan view of said mechanism.

My improvements are especially designed for use in connection with power lift plows embodying a land wheel crank wheel and a furrow wheel crank. The adjusting mechanism which will be presently described and claimed hereinafter, operates between these two cranks. Aside from this adjusting mechanism, the plow may of any suitable or preferred construction.

I have for purpose of illustration shown a plow frame designated generally by 5 carrying low bodies 6 and supported by a land wheel a furrow wheel 8 and a rear furrow wheel 9. Crank axles 11 and 12 connect the land and furrow wheels, respectively, to the plow frame, each crank axle havinga I horizontal pivot portion mounted for oscillation on the plow frame. In the present instance, a power lift mechanism operates between the crank axle 11 and the frame for raising and lowering the plow frame at v both the front and rear ends, as is well" the forward end of the plow USTING MECHANISM ."FOR PIiOWS.

shown, the'driven element of a clutch me'ch 1920, Serial No. 352',287-. I )ividei 1 an this application filed April 24.1922, Serial No. 556,139. 4 I i anism 13 concentric with the land Wheel 7 I is connected by means of a link 14 toan adjusting lever 15 for raising andilowering frame. rear end of the plow frame' is similarly raised and. lowered by operation ofisaid power lift mechanism through the agenc The of aconnection 16 and a suitable lift 'mecha-- I nism, that shown forming the subject matter of my Patent No. 1,396,793. Said power lift mechanism is controlled by'pulling the cord 17' which upon successive actuation, causes the plow to be raised and lowered. During the raising and lowering operations the "pivot portion 18 of the crank axle 1.1

will be oscillated or rocked, and this movement will be transmitted to the horizontal portion 19 of the land wheel'crank axle for similarly moving the latter for the purpose of raising or, lowering both sides of the plow in unison. The adjusting mechanism for transmitting. this'movement bet-ween the rock shafts or pivot portions 18 and 19, of the crank axles will now be described.

This adjusting mechanism and connection, best shown in Fig. 3, consists of an upright arm 21, fixed to the crank portion 18, an upright arm 22 fixed to the crank portion 19,

a notched lever segment 23 pivotally attached at 24 to the upper end of the arm-22, a guide bar 25 bolted at 26'and 27 to both ends of the segment bar and slidable through a guide block 28 pivotally attached at 29 to the upper end of the arm 21, and an adjustin ally connected at its lower end at 32 through the agency of a link 33 with theupper end roward side by bolts 26 and 35,a guide bar lever 31-pivotally mounted on the bolt 27 oii section 36 which passes through a slot 37 in the arm 22, as plainly; shown in Fig. 2. By

reason of the foregoing connection, the fur row wheel crank 12 will be rocked by movement of the land Wheel crank 11 when the y latter is operated either by hand or by power for raising or lowering the plow,the' hand lever 31 moving in a substantiallyparallel movement as distinguished from swinging in an arc, so as not to be a source of danger.

95 of the arm '21. The guide bar 25 is of sectional construction having boltedto'its fur-- relative adjustment'betweenthe crank axles to anyone closelto'this lever; The primary purpose of the hand lever 31 is to enable tion therebetween byireason of the lever are r'angement; It will'b'e noted that the guide bar 25"serves by its sliding connection with the arm 21', to maintain the" lever segment in level position and by its slidable connec-- tion with the arm 22, to maintain this seg aced above,

n'ient and lever inupright position;

Iti'sbelieved thatthe foregoing conveys a clear understanding of the objects prefand While I have illustrated but a single working embodiment, it should be understood that changes might be made in details of construction 'without departing segment an rear arm,

from the spirit andscope of the invention as expressed in the appended claim.

I claim: 1 In a plow, in combinatiomaplow frame,

supporting wheels, a forward and a rearward crank axle for said Wheels mounted on 1 the frame, an upstanding arm fixed to the pivot portion of each crank axle, a notched segment pivotal ly attached to the upper end of the forward arm, a horizontal link disposed below the pivotal connection of the segment and its supporting arm, saidlink being attached at its forward end to said d having a sliding connectlonat its opposite end with the upstanding rear arm, alever pivoted on said link concentric 40 r with saldsegment and having alatch coop crating with the notched portion thereof, a

link pivotally connecting the lever and the and means operative between the forward upstanding arm and the link-for holding the latter from lateral displacement. HARRY .R. TRAPHAGEN. 

